JPS5712342A - Crystal barometer - Google Patents
Crystal barometerInfo
- Publication number
- JPS5712342A JPS5712342A JP8558580A JP8558580A JPS5712342A JP S5712342 A JPS5712342 A JP S5712342A JP 8558580 A JP8558580 A JP 8558580A JP 8558580 A JP8558580 A JP 8558580A JP S5712342 A JPS5712342 A JP S5712342A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- clock
- signals
- output
- altitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
PURPOSE:To obtain a barometer simple in structure, easy to operate and can be incorporated as a part of function of a clock, by detecting frequency of oscillation in atmosphere and vacuum and calculating and indicating atmospheric pressure or altitude. CONSTITUTION:Output signals of a crystal oscillator 1 sealed in a vecuum container passes through binary divider 2 of 15 steps and one second signal is converted to time information by a clock counter 3. The signals are displayed in an indicator 7 through a switchover circuit 4, decoder 5, driving circuit 6. On the other hand, intermediate or final output of the divider 2 is inputted to a control circuit 12 to reset a counter 9. The gate is then opened for a specified time to count signals from a crystal oscillator 8 in the atmosphere. The output is stored in memory 10 and atmospheric pressure and altitude are calculated from the count of frequency in vaccum and the difference in an arithmetic circuit 13 and indicated 7 through the switchover circuit 4 and a switch 11. This is simple in structure, easy to operate and can be incorporated in a part of a clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8558580A JPS5712342A (en) | 1980-06-24 | 1980-06-24 | Crystal barometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8558580A JPS5712342A (en) | 1980-06-24 | 1980-06-24 | Crystal barometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5712342A true JPS5712342A (en) | 1982-01-22 |
Family
ID=13862883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8558580A Pending JPS5712342A (en) | 1980-06-24 | 1980-06-24 | Crystal barometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5712342A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51132916A (en) * | 1975-05-15 | 1976-11-18 | Mitsubishi Electric Corp | Accioent inpection method of tdma end office apparatus |
| US5546810A (en) * | 1993-07-06 | 1996-08-20 | Seiko Epson Corporation | Pressure measuring device and method using quartz resonators |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554559A (en) * | 1978-06-27 | 1980-01-14 | Meisei Electric Co Ltd | Pressure sensor using crystal vibrator |
-
1980
- 1980-06-24 JP JP8558580A patent/JPS5712342A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554559A (en) * | 1978-06-27 | 1980-01-14 | Meisei Electric Co Ltd | Pressure sensor using crystal vibrator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51132916A (en) * | 1975-05-15 | 1976-11-18 | Mitsubishi Electric Corp | Accioent inpection method of tdma end office apparatus |
| US5546810A (en) * | 1993-07-06 | 1996-08-20 | Seiko Epson Corporation | Pressure measuring device and method using quartz resonators |
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